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puting time as double density, it prints at the same speed as nor- mal density graphics. Amazing, you say? Well, it is - until you know the secret. Every other column of dots is ignored, so the output is actually the same as normal density graphics. The ad- vantage is that you can write and debug your programs at dou- ble speed, then change to double density graphics for terrific out- put.
This printer has three other densities (CRT, plotter, and CRT type II ) which can be used to achieve greater compatibility with various hardware and software configurations. Plotter density
can be especially for simplifying programming, since it has equal densities both the horizontal and vertical directions (72 dots per inch each way). With this feature you can plot truely round circles without any type of scaling factors.
COMPATIBJLITY WITH EXISTING SOFTWARE
With its ability to print seven different graphics densities, this printer’s graphics abilities are advanced indeed. There are many programs, in fact, that are unable to use this printer’s single graphics command (ESC)“*” for selecting the proper density. To maintain compatibility with this software, there are individual commands to select each of this printer’s common
Table
Alternative graphics commands
Density | Single command |
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| Individualcommand |
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Normal | (ESC)“*” | CHWW) | ~1 n2 | (ESC)<<K,, lzl n2ml | m2 ... | ||
ml m2 ... |
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Double | (ES(I)“*” | CHR$(l) | ” | x2? (ESC)“L” | nl nZ ml | m2 ... | |
| ml m.2 ... |
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Double with | (ESC)“*” | CHR$(2) nl | n2 | xESC)“Y,, nl n2 ml m2 ... | |||
ml m2 ... |
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Quadruple | (ES(Z)“*” CHR$(3) nl | n2 | (ESC)“Z” | nl 722ml | m2 ... | ||
| ml m2 ... |
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CRT | (ES(Z)“*” CHR$(4) nl | n2 | none |
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ml m2 ... |
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Plotter | (ES(I)“*” | CHR$(5) | nl | 722 nOne |
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ml m2 ... |
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| (ES(X)“*” | CHRW) | ~1 ~2 | nOne |
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CRT type II ml m2 ... |
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